Heterocyclic containing monoazo compounds

ABSTRACT

1,2-(-Z-),4-AR,5-((Y1-PHENYL)-N=N-)IMIDAZOLE,   COMPOUNDS OF THE FORMULA: R2 REPRESENS ALKYL; X REPRESENTS HYDROGEN, HALOGEN, ALKYL, CYANO, NITRO, ALKYLSULFONYL, ALKOXYCARBONYL OR HYDROXY; M REPRESENTS 1 TO 2; Q REPRESENTS A BASIC DYE ANION; AR REPRESENTS AN UNSUBSTITUTED OR SUBSTITUTED CARBOCYCLIC ACYL GROUP; AND Z REPRESENTS THE ATOMS NECESSARY TO COMPLETE A FIVE OR SIX MEMBERED HETEROCYLIC RING THE MONOAZO COMPOUNDS ARE USEFUL AS DYES FOR HYDROPHOBIC TEXTILE MATERIALS, SUCH AS POLYESTER AND CELLULOSE ACETATE. THE CATIONIC MONOAZO COMPOUNDS ARE USEFUL AS DYES FOR ACRYLIC, MODACRYLIC AND ACID-MODIFIED POLYESTER TEXTILE MATERIALS.   1,2-(-Z-),4-AR,5-(((-CO-N(-R1-Y2)-CO-),(X)M-PHENYL)-N=N-)-   Y1, MORPHOLINO, OR -N(-R2)2 1,2-(-Z-),5-(((Y2-R1-A-),(X)M-PHENYL)-N=N-)IMIDAZOLE   IMIDAZOLE, OR       Y1 REPRESENTS   -COO-, OR -OOC-   -SO2-, -SO2-NH-, -CO-NH-, -NH-CO-, -CO-, -O-, -CH2-,   WHEREIN R1 REPRESENTS ALKYLENE; A REPRESENTS Y2 REPRESENTS   PYRID-1-YL Q(-), OR 1-R2-PIPERIDINO Q(-)   -N(+)(-R2)3 Q(-), 4-R2-MORPHOLINO Q(-),

Patented Apr. 16, 1974 The novel compounds of the invention have the general 3,804,823 formula:

HETEROCYCLIC CONTAINING MON OAZO N COMPOUNDS John G. Fisher and Gary T. Clark, Kingsport, Tenn., asr 1 z signors to Eastman Kodak Company, Rochester, N.Y. 5 J No Drawing. Filed Feb. 15, 1972, Ser. No. 226,552

Int. Cl. C09b 29/36 (I) N US. Cl. 260-158 10 Claims 0 4; Ar 10 L ABSTRACT OF THE DISCLOSURE D Compounds of the formula:

0 1] Ar N\ P y, n J R represents lower alkylene;

Ar N Y1 I z 15 Yz-RJ-A Z R represents B1 NF 0 0 O A Y? M LL a. -o lo 0, ol

Y represents Xm L 2, efi 9 L 0 9 wherein N R):|Q N :IQ L 1Q R represents alkylene; R

A represents or 9 Y1 represents 40 R represents lower alkyl;

|'B/ 9 l'g e X represents hydrogen, halogen, lower alkyl, cyano, nitro, 9 T 1 I :I lower alkylsulfonyl, lower alkoxycarbonyl or hydroxy;

L m represents 1 or 2;

or Q represents a basic dye anion;

aryl group; and

W 30 Q Ar represents an unsubstituted or substituted carbocyclic L1! 1 Z represents the remainder of a heterocyclic ring system which completes a 5 or 6 membered ring with the car- Yz represents bon and nitrogen atoms to which Z is bonded, the ring Y1 b atoms of Z consisting of carbon, or carbon and at least one nitrogen, sulfur or oxygen atom. R2 represents alkYl, The unquaternized compounds of the invention, i.e.,

X represents hydrogen, halogen, alkyl, cyano, nitro, alkylwhen Y2 defined as sulfonyl, alkoxycarbonyl or hydroxy; B or m represents 1 or 2;

Q represents a basic dye anion; h

i ave excellent afiinity for hydrophobic textile materials gi 32 i or subsmuted carbocychc such as polyester, cellulose acetate and polyamide fibers Z represents the atoms necessary to complete a five or l e ofhyeuow or p The cations of the inven' six membered heterocyclic ring. n w an Y1 or Y2 1s The monoazo compounds are useful as dyes for hydro- E 2 6 E 5 9 E f 6 L U L phobic textile materials, such as polyester and cellulose L I acetate. The cationic monoazo compounds are useful as dyes for acrylic, modacrylic and acid-modified polyester or F 9 textile materials. Li

This invention relates to certain novel monoazo comhave excellent afiinity for acrylic, modacrylic and acidpounds useful as dyes for hydrophobic textile materials, modified textile materials and when applied thereto by such as polyester and cellulose acetate, and to novel conventional means, display excellent properties, such as cationic monoazo compounds useful as dyes for acrylic, for example, excellent fastness to light and wet processing modacrylic and acid-modified polyester textile materials. as well as perspiration fastness.

Examples of the lower alkylene groups which may be represented by R are methylene, ethylene, propylene, isopropylene, butylene, etc. Examples of the lower alkyl, lower alkylsulfonyl, lower alkoxy, lower alkoxycarbonyl or halo groups represented by X include methyl, ethyl, propyl, isobutyl, isopropyl, butyl, methoxy, ethoxy, propoxy, bromo, chloro, fluoro, methylsulfonyl, ethylsulfonyl, propylsulfonyl, butylsulfonyl, methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, butoxycarbonyl, etc.

The carbocyclic aryl groups represented by Ar can be unsubstituted or substituted with lower alkyl, lower alkoxy, halogen, nitro, cyano, etc. Specific examples of such phenyl groups include but are not limited to phenyl, p-tolyl, m-ethylphenyl, p-anisyl, p-chlorophenyl, o-bromop-tolyl, o,p-dichlorophenyl, p-cyanophenyl.

The carbon atoms of the unsaturated, divalent groups represented by Z can be substituted or unsubstituted. Examples of the ring atoms that Z can represent include wherein R represents hydrogen or one or more substituents described above. Preferably, R represents not. more than two substituents.

A particularly preferred group of the compounds of the invention are those containing a diazo component having the formula:

SOQ.

l -Mm).

ZEN-- A preferred group of the coupler components of the novel compounds of the invention have the formula or N wherein Ar represents phenyl or phenyl substituted with lower alkyl; and R represents hydrogen and lower alkyl. Especially preferred are the coupler components conforming to the above structure to which R is attached.

The monoazo compounds of the invention are prepared by diazotizing an amine having the formula:

and coupling the resulting diazonium salt with a compound having the formula III N Ar In addition to the examples below, the preparation of the couplers used for preparing the novel compounds of the invention are also described in A. Chem. 2, 153 (1962); C.A., 58, 453g; Ber., 95, 1128 (1962); Ber., 60, 1607 (1927); and J. Pharm. Soc. Japan, 57, 1050 (1937); C.A., 32, 33,985.

The novel cationic compounds of the invention are prepared by treating the monoazo compounds described above with an alkylating agent at elevated temperature with or without an inert solvent. Suitable alkylating agents that can be used are the dialkyl sulfates, the alkyl halides, the aralkyl halides, the alkyl esters of aryl sulfonic acids, etc. Examples of such alkylating agents include dimethyl sulfate, diethyl sulfate, dipropyl sulfate, ethyl bromide, methyl iodide, ethyl iodide, benzyl chloride, benzyl bromide, methyl p-toluene sulfonate and ethyl benzenesulfonate.

Examples of the basic dye anions represented by Q include Cl, Br", *I, CH SO;', C3H5SO3 etc., the anion depending upon the method of isolation utilized and the particular quaternizing agent employed. The anion does not affect the utility of the cations of the invention as dyes nor does it affect the dye affinity of the cations for polyacrylonitrile textile materials. When the compounds are used to dye polyacrylonitrile textile material, the anion becomes associated with a positively charged ion derived from the polyacrylonitrile and is removed from the dye cation and polyacrylonitrile textile material, either in the dyebath or in a subsequent washing of the dyed polyacrylonitrile textile material. As is well known in the art, the cation of a cationic azo dye is responsible for the color of the compound and the particular anion associated with the cation is not important.

As is well known in the art of dye chemistry, the primary color of the compounds of the invention is attributable to the conjugation of the compounds as shown in Formula I. For this reason, the groups represented by X Ar and Z, as these groups are defined herein, are not important with respect to the usefulness of the compounds as dyes for the described textile materials. The groups represented by X Ar and Z and their substituents, if any, that are present on these groups function primarily as auxochrome groups to vary the color of the compounds and cations.

The unquaternized and quaternized compounds of this invention and their preparation are further illustrated by the following examples.

PREPARATION OF THE COUPLERS Example 1.--6,6-dimethyl-8-keto-2-phenyl-5,6,7,8-tetrahydroimidazo[2,l-b]benzothiazole A 0.08 in. quantity each of 2-amino-5,5-dimethyl-7- keto 4,5,6,7 tetrahydrobenzothiazole and a-bromoacetophenone are mixed in 150 ml. of chloroform and heated at reflux for 4 hours. The slurry is filtered hot and the insoluble intermediate product is suspended in 600 ml. of water containing 25 g. of sodium acetate. This suspension is heated slowly to boil over 2% hours, then allowed to cool. The product is filtered oif, washed well with water and dried yielding 12.5 g. of product melting at 175-178 C. and having the structure:

Example 2.-2-phenylimidazo l,2-a] pyrimidine An equimolar mixture of Z-aminopyrimidine and abromoacetophenone are heated in absolute ethanol for several hours at 60-70 C. Anhydrous ether is added to precipitate the hydrobromide of the product. The free base, melting at 202 C., is obtained by the action of aqueous Na CO solution and has the formula Example 3.7-methyl-2-phenylimidazo[ 1,2-c]pyrimidine Substitution of 4-amino-6-methylpyrimidine yields a coupler which melts at 244 C. and has the structure:

6 Example 4.2-pheny1imidazo[2,1-b1benzothiazole Example 5 .2-phenylimidazo 1,2-a] pyridine 0.1 m. quantities of Z-aminopyridine and a-bromoacetophenone are heated in ml. of chloroform at reflux for 2 hours. The chloroform is evaporated and the oily residue taken up in 10% HCl, warmed, charcoal added and filtered. The filtrate is neutralized with NH OH and the solid product isolated and recrystallized from ethanol. The yield of product is 12.7 g., melts at 135-137 C. and has the structure:

Example 6.2-phenyl-5,6,7,8-tetrahydroimidazo- [2,1-b1benzothiazole 0.1 in. quantities of 2-amino-4,5,6,7-tetrahydrobenzothiazole and a-bromoacetophenone in 100 ml. of chloroform are heated at reflux for 2 hours. After cooling, the solid is filtered off and slurried in 1 l. of water containing 40 g. of ammonium acetate. This suspension is heated to boiling over a 2-hour period and allowed to cool. The product is collected, washed with water and dried. The yield of product is 19.8 g. melting at 158-160 C. and having the formula:

Example 7.6-phenylimidazo[2,1-b]-1,3,4-thiadiazole 10.1 g. of 2-amino-l,3,4-thiadiazole is dissolved in 160 ml. of ethanol, 19.9 g. of a-bromoacetophenone is added and the solution is heated and stirred at reflux for 1 hour. After cooling, the solid is filtered off and dissolved in 750 ml. of water and 40 ml. of 48% hydrobromic acid. This solution is heated at reflux for 1 hour, neutralized by addition of solid ammonium acetate and refluxed /2 hour longer. After cooling, the product is collected on a filter, washed with water and dried. The yield of product is 13 g. melting at 127-130" C. It has the formula:

lilil Example 8.6-phenylimidazo[2,I-bJthiazole Bromine (21.5 ml.) is added to a solution of 50 g. of acetophenone and 0.1 g. of anhydrous AlCl in 200 ml. of chlorobenzene. The addition requires about 20 minutes and the temperature of the reaction solution rises to about 35 C. Dry air is bubbled through the solution until all the gaseous HBr is removed. Z-aminothiazole (24 g.) is added and the reaction mixture stirred and heated on a steam bath for 1 hour. The thick reaction mixture is 7 filtered while still hot and the filter cake washed with hexane. The dry product is slurried in 200 ml. of methanol and then diluted with a solution of 80 g. ammonium acetate in 1600 ml. of water. This suspension is stirred and heated to 80 C., then filtered and the product thus obtained is washed with 4 l. of water. The yield is 70 g. of product which melts at 143-144 C. and has the Additional couplers can be prepared by employing techniques either published in the literature or analogous to those described in the preceding examples.

PREPARATION OF THE MONOAZO COMPOUNDS Example 9a To 30 ml. of 1-5 acid [one part propionic acid to five parts acetic acid] a solution of 2.16 g. (0.03 mole) of sodium nitrite in 15 ml. of cone. H 80 is added portionwise at a temperature below 20 C. The solution is cooled and 7.9 g. (0.03 mole) of p-[fl-(diethylaminoethyl)sulfonyl] aniline is added at a temperature below 5 C. and then 30 ml. of 1-5 acid is added below 5 C. After stirring at -5 C. for 3 hr., the diazotization is complete. The diazo solution is added at a temperature below 10 C. to an externally cooled solution of 1.0 g. (0.005 mole) of 6-phenylimidazo [2,1-b]thiazole in 20 ml. of 1-5 acid. The mixture is neutralized with solid NH OAS to Congo red paper. After coupling is complete, the reaction is drowned into ice water and made basic with cone. NH OH. The dye is collected by filtration, washed with water and air-dried.

Example 9b One gram of the dye from Example 9a is heated in ml. of dimethyl sulfate on the steam bath for 20 min. The solution is drowned in 150 ml. of ether and the ether is decanted. The residue is dissolved in water and reprecipitated after filtering by addition of KI. The resultant quaternary iodide imparts fast yellow shades to acrylic fibers. This dye has the following structure:

Example 10a To a solution of 4.36 g. (0.015 m.) 2-chloro-4-N-[y- (dimethylaminopropyl)sulfonamido]aniline in 9 ml. of cone. HCl and 30 ml. of water, a solution of 1.08 g. (0.015 m.) of NaNO;, in 10 ml. of water is added below 5 C. After stirring at --5-0 C. for 2 hr. the diazotization is complete. The diazo solution is added below 10 C. to a solution of 1.0 g. (0.005 m.) of 6-pheny1imidazo [2,1-b]thiazole in 20 ml. of 1-5 acid[propionicacetic]. The solution is neutralized to Congo red paper with solid NH OAC. After coupling is complete, the reaction is drowned in 200 ml. of ice water and then made basic with conc. NH OH. The dye is collected by filtration, washed with water and air-dried.

Example 10b One gram of the dye from Example 10a is heated in 3 ml. of dimethylformamide and 2 ml. of dimethyl sulfate on the steam bath for one hour. The reaction is drowned in 20 m1. of water and heated on steam bath for 30 min., filtered and the dye is reprecipitated with KI. The resultant quaternary iodide imparts fast orange shades to acrylic fibers. This dye has the following structure:

NH-C H -N-(CHz);

1 The dyes in the following examples are prepared in a manner similar to that described in the previous examples.

Example 11a A solution of 3.94 g. (0.015 m.) of p-[dimethylaminoacetamido] aniline dihydrochloride in 4.5 ml. of conc. HCl and 15 ml. of water is diazotized and coupled with 6- phenylimidazo[2,1-b]thiazole as described in Example 10a. The dye is also isolated as described in Example 10a.

Example 11b One gram of the dye from Example 11a is quaternized as described in Example 10b. The resultant quaternary iodide imparts fast yellow shades to acrylic fibers. This dye has the following structure:

One gram of the dye from Example 12a is quaternized as described in Example 10b. The resultant quaternary salt imparts fast yellow shades to acrylic fibers. This dye has the following structure:

Example 13 Five grams of 2-bromo-4[fl-diethylaminoethylsulfonyl] aniline is diazotized and coupled with 6-phenylimidazo [2,1-b]thiazole as described in Example 9a. The resulting dye is isolated in the same manner as described in Example 9a. This dye imparts fast orange shades from an acid dye bath on acid modified polyester and acrylics. This dye has the following structure:

zHrN-( 2H5):

Example 14 A dye having the following structure is prepared and isolated in the same manner as described in Example 9a.

Example 15 A solution of 8.11 g. (0.03 mole) trimethylammonium- 4'-acetamidoacetophenone chloride in 9 ml. of cone. HCl and 30 ml. of water is heated on a steam bath for 1.5 hours. The solution is cooled and diazotized and coupled with G-phenylimidazo[2,l-b]benzothiazo1e as described in Example 10a. After coupling is completed, the reaction product is poured into water, collected by filtration and air-dried. This dye imparts a yellowish-orange shade on acrylic fibers. This dye has the following structure:

CHA aCHi ifiTID Examples 16-33 The azo compounds set forth below are prepared according to the procedures described above or by known 7 techniques analogous to those procedures. The colors given for the following examples of the compounds of the invention refer to polyester fibers dyed with these compounds:

TABLE I N Ar 11 12 Examples 34-39 Example 40 The azo compounds set forth below are prepared ac- An amount of 0.1 g. of the dye is dissolved in the dye cording to the procedures described above or by known pot by warming in 5 cc. of Z-methoxy ethanol. About 3-5 techniques analogous to those procedures. The colors cc. of a 3% sodium lignin sulfonate aqueous solution is given for the following examples of the cations of the in- 5 added, with stirring, until a fine emulsion is obtained.

vention refer to acrylic fibers dyed with these cations. Water is then slowly added to a total volume of 300 cc.

TABLE II Example Compound Color 34. CHr NTS Yellow.

Q aid 0: =0 e N 1 A H2): CHa-N-CE 35 N S D No. mm- 0 .711: l CHPNON-N e JJH; 1

36 Br Do.

39 C'Hi NYS D0.

The monoazo compounds of the invention can be used Then, 3 cc. of an emulsifiable nonionic, modified biphenyl for dyeing hydrophobic fibers such as linear polyester, derivative carrier (Carolid: Tanatex Chemical Corp.) cellulose ester, polyamide, etc., fibers in the manner de- 7 are added and 10 grams of a textile fabric made of poly scribed in US. Pats. 2,880,050; 2,757,064; 2,782,187; and (ethylene terephthalate) fibers are entered. The fabric is 3,043,827. worked 10 minutes without heat and then for 10 minutes The following example illustrates one method by which at 80 C. The dye bath is then brought to the boil and the compounds of the invention can be used to dye polyheld at the boil for one hour. Following this, the fabric ester textile materials. 7 is rinsed in warm water, then scoured in aqueous 0.2%

soap, 0.2% soda ash solution. After scouring, the fabric is rinsed with water and dried.

When the compounds of the invention are used to dye polyamide textile materials, the above procedure can be employed except the Carolid dyeing assistant need not be used. When cellulose acetate fibers are dyed with the compounds, the above procedure can be followed omitting the Carolid dyeing assistant and carrying out the dyeing at 80 C. for one hour rather than at the boil.

The compounds of the invention can also be applied to polyester textile materials by the heat fixation technique of dyeing. This procedure is described in US. Pat. 2,663,- 612 and in the American Dyestu-fi Reporter, 42, 1 (1953).

Polymeric linear polyester materials of the terephthalate type are illustrative of the linear aromatic polyester textile materials that can be dyed with the compounds of our invention. Examples of linear polyester textile materials that can be dyed with the compounds of the invention are those prepared from ethylene glycol and dimethylterephthalate) polyester fibers are described, for example, ylterephthalate. Polyesters prepared from cyclohexanedimethanol and dimethylterephthalate are more particularly described in U.S. Pat. 2,901,446. Poly(ethylene terephthalene) polyester fibers are described, for example, in U.S. Pat. 2,465,319. The polymeric linear polyester materials disclosed in US. Pats. 2,945,010, 2,957,745 and 2,989,363, for example, can be dyed. The linear aromatic polyester materials specifically named have a melting point of at least 200 C. and are sold under the trade names Kodel, Dacron and Terylene.

Examples of the polyamide fibers that can be dyed with the compounds of the invention are those consisting of nylon 66, made by the polymerization of adipic acid and hexamethylenediamine, nylon 6, prepared from epsilonaminocaproic acid lactam, and nylon 8. The cellulose acetate fibers that can be dyed with the compounds of the invention include fibers consisting of either cellulose triacetate or partially hydrolyzed cellulose acetate.

The cationic monoazo compounds of the invention can be used for dyeing acrylic and modacrylic polymer fibers, yarns and fabrics a broad range of shades. Acrylic textile materials are those which consist of at least 85% acrylonitrile and modacrylic textile materials are those consisting of at least 35% but less than 85% acrylonitrile. The cationic compounds of the invention also give excellent dyeings on acid-modified acrylic textile materials such as the sulfonate modified acrylic fibers described in US. Pats. 2,837,500; 2,837,501 and 3,043,811. The novel cationic compounds can also be used to dye sulfonate modified polyester fibers such as are described in U.S. Pat. 3,018,272. Examples of the textile materials that are dyed with the cationic compounds of the invention are those sold under the trade names Orlon, Orlon 42, Verel, Acrilan, Dynel, Creslan and Dacron 64. In general, the cationic compounds when used as dyes on the described textile materials, exhibit improved fastness, for example, to washing, to alkaline perspiration, gas (atmospheric fumes) and sublimation.

Textile materials dyed by the cationic compounds of the. invention are characterized by containing at least about 35 combined acrylonitrile units and up to about 95% acrylonitrile units, and modified, for example, by 655% of vinyl pyridine units as described in US. Pats, 2,990,393 (Re. 25,533) and 3,014,008 (Re. 25,539) or modified by 65-5% of vinylpyrrolidone units, for example, as described by U.S. Pat. 2,970,783, or modified with 65-5% acrylic ester or acrylamide units as described in US. Pats. 2,879,253; 2,879,254 and 2,838,470. Similar amounts of the other polymeric modifiers mentioned above are also useful. A preferred group of the copolymers readily dyeable with the dyes of the invention are the modacrylic polymers such as described in U.S. Pat. 2,831,826 composed of a mixture of (A) 7095% by weight of a copolymer of from 30 to 65% by weight of vinylidene chlo- 14 ride or vinyl chloride and 70-35% by weight of acrylo nitrile, and (B) 30-5% by weight of a second polymer from the group consisting of (l) homopolymers of acrylamidic monomers of the formula wherein R is selected from the group consisting of hydrogen and methyl, and R and R are selected from the group consisting of hydrogen and alkyl groups of 1-6 carbon atoms, (2) copolymers consisting of at least two of said acrylamidic monomers, and (3) copolymers consisting of at least 50% by weight of at least one of said acrylamidic monomers and not more than 50% by weight of polymerizable monovinyl pyridine monomer.

Another type of modacrylic polymer than can be dyed with the cationic compounds of the invention is an acetone soluble mixture of (A) 70-95% by weight of a copolymer of 30-65% by weight of vinylidene chloride and 70- 35% by weight of acrylonitrile and (B) 30-5% by weight of an acrylamide homopolymer having the above formula wherein R, R and R are as described above. Specific polymers of that type contain 70-95% by weight of (A) a copolymer of from 30-65% by weight of vinylidene chloride and 70-35% by weight of acrylonitrile and (B) 30-5% by weight of a lower N-alkylacrylamide polymer such as poly-N-methacrylamide, poly-N-isopropylacrylamide and poly-N-tertiarybutylacrylamide.

The following example illustrates one way in which the cationic compounds of the invention can be used to dye acrylonitrile polymer textile material.

Example 41 An amount of 0.1 gram of dye is dissolved by Warming in 5 cc. of 2-methoxyethanol. A 2% aqueous solution of a nonionic surfactant, such as Igepal CA (a polymerized ethylene oxide-alkylphenol condensation product), is added slowly until a fine emulsion is obtained and then the dye mixture is brought to a volume of 200 cc. with warm water. Five cc. of a 5% aqueous solution of formic acid or acetic acid are added and then 10 grams of fabric made from an acrylic fiber is entered and, in the case of Orlon 42 acrylic textile material, the dyeing is carried out at the boil for one hour. In the case of materials made of Verel modacrylic fiber the dyebath temperature should not exceed C. in order to avoid damage to the fiber. The dyed material is then washed well with water and dried.

Although this invention has been described in detail with particular reference to preferred embodiments thereof, it will be understood that variations and modifications can be elfected within the spirit and scope of the invention.

We claim:

1. A compound of the formula 15 16 or Y and Y each represents N Nonailo or i? 1 Y3 .RI A L. L\

H H} and .N=N N X represents hydrogen, halogen, cyano, or nitro. Km 3. Compound according to claim 2 wherein Z represents wherein S s s R represents lower alkylene; R3 Ra Ra B3 A represents 0 0 I -so,-, -S02NH, -iiNn-, -NHi -d-, -o-,

0 O -CH iEO or -O y Y represents N wherein R represents hydrogen and lower alkyl. 0-. 0-. 4. Compound according to claim 3 wherein Ti :I :{I I: represent 1; h 1 h 1 b d '111 r represents p eny or p eny su stltute wit ower |-.R2 .-Q L l; or Z represents l e /S /S S Q i 1 L 0-. R N

Y, represents wherein R represents hydrogen and lower alkyl. 5. Compounds according to claim 4 wherein h Z represents R2 represents lower alkyl;

carbonyl or hydroxy; m represents 1 or 2; Q represents a basic dye anion;

Ar represents phenyl or phenyl substituted by lower alkyl, lower alkoxy, halogen, hydroxy or diloweralkylamino; and Z represents a group having the fromula wherein R represents hydrogen and lower alkyl. 6. Compound according to claim 1 having the formula CoHs s s Q s s o I o e z r i zHah Q CH. i l E 'I i 1 0 1 d' t 1 1 h th r ompoun accor mg 0 ca1m avmg e or- Z 5o mula O O N s 0 s o o 00H! o a 0-11 o l] l ---N=N N i /N I i 1 0 o NHCzHag(CH;)J Q9 8. Compound according to claim 1 having the foro mula II N S s g N o a s a E H T i i I'FCHI g N (CHa): Q -O O 9. Compound according to claim 1 having the for- H m a /N s CoHswherein R represents hydrogen or lower alkyl. 7 T W 2. Compound according to claim 1 wherein SOP A represents 0 0 i Br SO2-, SO:NH, NH or -ii-- 2H4-N(C2H5);

17 18 10. Compound according to claim 1 having the for- OTHER REFERENCES mula Straley et aL: Def. Pub. of Ser. No. 663,484, filed Aug. 0 /N\ /S 28, 1967, pub. in 857 O.G. 43 on Dec. 3, 1968, Def. Pub.

0115- 0 W l T857,010. J1 5 Chem. Abs., v01. 66, 1967, 11,8375.

Q9 LEWIS GO'ITS, Primary Examiner C. F. WARREN, Assistant Examiner References Cited 10 UNITED STATES PATENTS 6,2 9 8--41 A, 41 c; 260146 R, 146 D, 146 T, 147, 152, 153, 3 31 38 4/1 67 et al 260 152 X 154, 15-6, 157, 162, 163, 243 R, 244 R, 247.5 R, 248 AS, FOREIGN PATENTS 256.4 F, 281, 296 A, 296 H, 305, 306.8 F, 307 G, 326 N 427,092 12/1966 Switzerland 260156 21 31 50 UNITED STATES PATENT OFFICE Cleim 1, 601mm 14, lines 60-67, delete the formulas CERTIFICATE OF CORRECTION 3,804,823 Dated April 16, 1974 Patent No.

Inventor) John G. Fisher, Gary T. Cl k It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

and insert in lieu thereof the following April 16 1974 Dated v [UNITED STATES PATENT OFFIICE, CERTIFICATE OF CORRECTION,

It Is certified that error appears in the above-identified patent and that said Letters Patent are hereby c orrected as shown below:

Patent No.

hfientods) John G. Fisher, Gary T. Clark Claim 1,-1 cdlhmh 15, lines 45-60, delete the formulas and insert in lieu thereof c. MARSHALL DANN Comis'siener of Patents I si nediand sealed this 29th day of Otober 1974.

(SEAL),

Attest: moo M GIBSON JR.. At zsti-ng Officer TFC 10281 

